Newtons Laws
What are Newtons 3 laws?
"Every object will remain at rest or in uniform motion in a straight line unless compelled to change its state by the action of an external force".
What is Normal Force?
Normal force acts opposite of gravity
At any given time,objects have a _____ of forces acting upon them.
What is _____ supposed to represent?
At any given time,objects have a VARIETY of forces acting upon them.
What is motion?
Motion is a change in position compared to a reference point.
What is Speed?
How fast and object changes its position
What is Net Force?
The Total of all forces acting on an object
Every force has a ______ and a ______
What does _____ supposed to represent?
Every force has a MAGNITUDE and a DIRECTION
How do you know when something is moving?
Friction is going the opposite way of the motion the object is going in.
What is the formula of speed
Speed = Distance/Time
A force can be ____ or a ____
What does _____ supposed to represent?
A force can be a PUSH or PULL
A force can be a _____ or ____
What does _____ supposed to represent?
A force can be a PUSH or PULL
A man takes 5 hours 45 minutes in walking to a certain place and riding back. He would have gained 2 hours by riding both ways. The time he would take to walk both ways, is:
11
Two trains starting at the same time from two stations 200 km apart and going in opposite directions cross each other at a distance of 110 km from one of the stations. What is the ratio of their speeds?
11:9
Two trains starting at the same time from two stations 200 km apart and going in opposite directions cross each other at a distance of 110 km from one of the stations. What is the ratio of their speeds?
900 km